Unfortunately, all but the last item on your list have no or negative revenue potential. No one (save perhaps a few lefty billionaires) will pay you for the en

Unfortunately, all but the last item on your list have no or negative revenue potential. No one (save perhaps a few lefty billionaires) will pay you for the environmental stuff you mentioned, preventing a nuclear war, or preventing a large asteroid collision. I suppose there might be a small NASA contract in there for the asteroid issue, but the current budget for even tracking asteroids, much less stopping them, is small.